Browsing by Subject "Transducers"
Now showing items 1-19 of 19
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Calibration-less direct inductor-to-microcontroller interface
(Institute of Electrical and Electronics Engineers (IEEE), 2022-12-20)
Article
Open AccessA sensor-to-microcontroller interface circuit for inductive sensors that does not require a calibration inductor is presented. Three digital ports of a microcontroller, two transistors, and an embedded timer were used to ... -
Desarrollo de un pulser / amplificador para transductores de ultrasonidos
(Universitat Politècnica de Catalunya, 2020-06-29)
Bachelor thesis
Restricted access - confidentiality agreement -
Design of a GUI based on the implemented IEEE1451 Standard in a Wireless Sensor Network
(Universitat Politècnica de Catalunya, 2014-07-24)
Bachelor thesis
Open Access
Covenantee: Technische Universität Berlin[ANGLÈS] Wireless Sensor Networks are widely used in different fields for monitoring and controling purposes. The family of standards IEEE1451 defines a set of communications interfaces between the sensors and the ... -
Design project of a miniature load transducer.
(Universitat Politècnica de Catalunya, 2014-06-26)
Bachelor thesis
Restricted access - author's decisionIn this project the design of a compact load transducer is proposed in order to know the tensile load of wires under their operational conditions. This transducer will consist basically of two components, an elastic ... -
Estudi i caracterització de la resposta elèctrica d’elements piezoelèctrics davant diferents excitacions
(Universitat Politècnica de Catalunya, 2017-06)
Bachelor thesis
Open AccessL’objectiu d’aquest estudi és determinar les condicions òptimes de les tensions mecàniques, vibracions, a les que estaran sotmesos els transductors piezoelèctrics del tipus PI-876.A12 per aconseguir la màxima resposta ... -
Evaluation of trr distorting effects reduction in DCI-NPC multilevel power amplifiers by using SiC diodes and MOSFET technologies
(Curran, 2013)
Conference report
Restricted access - publisher's policyIn the last decade, the Power Amplifier applications have used multilevel diode-clamped-inverter or neutral-point-clamped (DCI-NPC) topologies to present very low distortion at high power. In these applications a lot of ... -
Implementación de un transponder 64QAM en FPGA mediante Simulink
(Universitat Politècnica de Catalunya, 2016-09)
Bachelor thesis
Open AccessThe current evolution of communication systems has been driven by the high demand of resources that are needed to satisfy services which are dependent of the network. To contain the high requirements of current and emerging ... -
Improvement of a configurable excitation system of an array of ultrasound transducers for transcranial insonation
(Universitat Politècnica de Catalunya, 2022-05-27)
Master thesis
Restricted access - confidentiality agreement -
Method to measure reflection coefficient under CW high-power signals in SAW resonators
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Conference report
Restricted access - publisher's policyImproving power handling and lifetime are key assets to ensure device performance and reliability. SAW resonators composed by very thin cross-section inter-digital transducer (IDT) structures make difficult to control the ... -
New strategy to minimize dead-time distortion in DCI-NPC power amplifiers using COE-error injection
(Curran, 2013)
Conference report
Restricted access - publisher's policyThe DCI-NPC topology has become one of the best options to optimize energy efficiency in the world of high power and high quality amplifiers. This can use an analog PWM modulator that is sensitive to generate distortion ... -
Nueva plataforma dinamométrica para el análisis y valoración del rendimiento deportivo
(Sociedad Ibérica de Biomecánica y Biomateriales, 1993)
Article
Open AccessUn nuevo modelo de plataforma dinamométrica ha sido desarrollado por el Instituto de Biomecánica de Valencia (IBV) y se han fabricado sus primeros prototipos. Permite la medida de la fuerza de reaccipón tridimensional, en ... -
Projecte de disseny mecànic per a una bàscula de precisió per al pesat i centrat de planadors
(Universitat Politècnica de Catalunya, 2017-06-20)
Master thesis
Restricted access - author's decision -
Sistema de localització per ultrasons
(Universitat Politècnica de Catalunya, 2016-10)
Master thesis (pre-Bologna period)
Restricted access - author's decisionThe project aims to develop an integral hardware-software system to detect the position of an object in the near zone using a low cost ultra-wave transducer. The project will use a development board from the same author. -
Splitting of the ultrasounic beam path in clamp-on ultrasonic flowmeters due to propagation through dispersive materials
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference report
Restricted access - publisher's policyThis article explains how a multi-frequency ultrasonic beam path is split due to passing through dispersive materials and the implications that it has in flow measurement using a Clamp-on ultrasonic flowmeter. The importance ... -
The HOM problem is EXPTIME-complete
(2016)
Article
Open AccessWe define a new class of tree automata with constraints and prove decidability of the emptiness problem for this class in exponential time. As a consequence, we obtain several EXPTIME-completeness results for problems on ... -
The IEEE1451 Std applied to data acquisition systems in the TJ-II nuclear fusion device
(2015)
Conference report
Open Access -
The noise performance of a high-speed capacitive-sensor interface based on a relaxation oscillator and a fast counter
(Institute of Electrical and Electronics Engineers, 2005-10)
Article
Open AccessThis paper presents the analysis and experimental results on the noise performances of a capacitive-sensor interface. The interface is able to measure low capacitance values in the order of picofarads and is implemented ... -
Ultrasonic pulse generation by a piezoelectric transducer at cryogenic temperatures
(Universitat Politècnica de Catalunya, 2018-06)
Bachelor thesis
Open AccessThe use of cryogenic liquid propellants such as liquid hydrogen or liquid oxygen has arisen a problem for future space missions. As a result of long storage periods bubbles are formed in propellant tanks due to boil-off. ... -
Zero-flow offset variation in ultrasonic clamp-on flowmeters due to inhomogeneity and nonlinearity of pipe materials
(2017-11)
Article
Restricted access - publisher's policyThe objective of this paper is to measure the zero-flow offset variation in ultrasonic Clamp-on flowmeters produced by using pipes made of materials with a nonhomogeneous and nonlinear behavior. The evaluation of this ...
